Musculoskeletal Disorders: Mechanisms of Muscle Contraction Abnormalities
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Questions and Answers

What mechanism can lead to muscle cramps?

  • Dehydration (correct)
  • Excessive energy production
  • Amino acid deficiency
  • Increased calcium flux
  • Which of the following is a common symptom of muscular dystrophies?

  • Improved motor development
  • Progressive muscle wasting (correct)
  • Joint stiffness
  • Increased muscle strength
  • What is the role of dystrophin in muscle contraction?

  • Energy production
  • Muscle phagocytosis
  • Joint stabilization
  • Affecting muscle contraction (correct)
  • Which disorder is genetically transmitted through a recessive gene on the X chromosome?

    <p>Limb-girdle muscular dystrophy</p> Signup and view all the answers

    What is the primary cause of weakness (loss of strength) in muscles due to disuse?

    <p>Atrophy</p> Signup and view all the answers

    Which condition can lead to rhabdomyolysis and subsequent renal failure?

    <p>Muscle tears releasing myoglobin</p> Signup and view all the answers

    What is the classification of Duchenne's muscular dystrophy based on progression?

    <p>Rapidly progressing</p> Signup and view all the answers

    'Gower's maneuver', seen in muscular dystrophies, refers to:

    <p>'Using hands to climb' up the legs to stand up</p> Signup and view all the answers

    'Polymyositis' involves inflammation of which part of the body?

    <p>Muscle groups</p> Signup and view all the answers

    What is the primary cause of fatigue in muscles according to the text?

    <p>Lack of energy production</p> Signup and view all the answers

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